Display screen or portion thereof with transitional graphical user interface



This application is related to U.S. patent application Ser. No. 16/290,836, filed on the same day of the present application and entitled “Controlling an Electronic Gaming Machine to Provide A Bonus Feature Opportunity,” to U.S. patent application Ser. No. 16/290,838, filed on the same day of the present application and entitled “Digital Lobby And Multi-Game Metamorphics,” to U.S. patent application Ser. No. 16/290,833, filed on the same day of the present application and entitled “Individual Metamorphic Linked Jackpots” and to U.S. patent application Ser. No. 29/682,179, filed on the same day of the present application and entitled “Display Screen or Portion Thereof With Transitional Graphical User Interface,” all of which are hereby incorporated by reference.

FIG. 1 is a first image in a sequence of a display screen or portion thereof with transitional graphical user interface showing our new design;

FIG. 2 is the second image thereof;

FIG. 3 is the third image thereof;

FIG. 4 is the fourth image thereof;

FIG. 5 is the fifth image thereof;

FIG. 6 is the sixth image thereof; and,

FIG. 7 is the seventh image thereof.

The subject matter in this patent includes a process or period in which an image changes into another image. This process or period forms no part of the claimed design.

The dashed broken line in the perimeter of the drawings illustrates a display screen or portion thereof and forms no part of the claimed design. The dashed broken lines in the interior of the drawings illustrates a transitional graphical user interface and forms no part of the claimed design. 

CLAIM We claim the ornamental design for a display screen or portion thereof with transitional graphical user interface, as shown and described. 